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Publikācija: Glass-Forming Non-Symmetric Bis-Styryl-DWK-Type Dyes for Infra-Red Radiation Amplification Systems

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Publikācijas valoda English (en)
Nosaukums oriģinālvalodā Glass-Forming Non-Symmetric Bis-Styryl-DWK-Type Dyes for Infra-Red Radiation Amplification Systems
Pētniecības nozare 2. Inženierzinātnes un tehnoloģijas
Pētniecības apakšnozare 2.4. Ķīmijas inženierzinātne
Pētniecības platforma Materiāli, procesi un tehnoloģijas
Autori Elmārs Zariņš
Jūlija Perveņecka
Aivars Vembris
Valdis Kokars
Atslēgas vārdi Laser dye; Amplified spontaneous emission; DWK; 4H-pyran-4-ylidene; Amorphous material
Anotācija A series of D-π-A type organic dyes with bulky triphenylmethyl moiety containing 2,6-bis-(4-substituted)styryl-4H-pyran-4-ylidene donor (D) fragments and different electron acceptors (A) were synthesized and investigated, mostly for potential applications in organic solid-state lasers as infra-red (IR) radiation amplification medium. Dye glass transition temperature is above 99 °C with thermal stability in the region from 173 °C to 326 °C which was slightly influenced by the electron acceptor fragment attached to the 4H-pyrane ring in 4-position. Introducing substituents in 4-position within one of the styryl-fragments with stronger electron withdrawing properties decreased ASE excitation threshold values (Eth) up to 180 μJ/cm2 in dye spin-cast neat films and shifted photoluminescence and amplified spontaneous emission (ASE) processes into the infra-red (IR) region. Although more studies are required, some of the investigated non-symmetric bis-styryl-DWK-dyes show potential as a solution-processable gain medium for IR radiation amplification.
DOI: 10.1016/j.optmat.2019.05.002
Hipersaite: https://www.sciencedirect.com/science/article/pii/S0925346719303003?via%3Dihub 
Atsauce Zariņš, E., Perveņecka, J., Vembris, A., Kokars, V. Glass-Forming Non-Symmetric Bis-Styryl-DWK-Type Dyes for Infra-Red Radiation Amplification Systems. Optical Materials, 2019, Vol.93, 85.-92.lpp. ISSN 0925-3467. Pieejams: doi:10.1016/j.optmat.2019.05.002
Papildinformācija Citējamību skaits:
  • Scopus  0
ID 29155